dude i just put a 4'' tb system on my 02 7.3 and let me tell ya better sound better response and waaay lower egts. i never realized how much the old dp held me back but all i can say is go 4'' youll not regret it

2002 f350 7.3 4x4 mbrp 4''turboback/foil delete/napa6637filtermod/autometers/ts 6 pos chip To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

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dude i just put a 4'' tb system on my 02 7.3 and let me tell ya better sound better response and waaay lower egts. i never realized how much the old dp held me back but all i can say is go 4'' youll not regret it

Stock is a 3" DP and I doubt you would notice much by changing from an aftermarket 3.5" to 4" DP. That said, just use 4" all the way. It's only slightly tighter fit for the 4" by the engine and why not go bigger? Price is the same or less for the 4" system.

Some people feel that they lose a little low end power with a full 4" system. Because of this, some manufacturers offer a 3.5" down pipe to help with spool up. For customers who have a stock truck (no chip or programmer) I suggest going with a 4". If you have a mild to highly modified truck, definitely go with 4". We have both sizes available on our site.

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it would definately lower your egt's, and the difference in price between kits with a 3.5 or a 4 isnt bad.. its definately worth the money... imo

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.[COLOR="Red"][SIZE="2"]2002 F-350 ext. cab long bed 4x4To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

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